Automatic gas cut-off.



N0. 806,366. PATENTED DEC. 5, 1905.

R. H. RE-ITER.

AUTOMATIC GAS GUT-OFF. APPLIOATION IILBD' JAN. 4. 1905.

2 sums-sum 1.

@m y f5 RALPnfH. REITIER, BRIDGE ATER, :PENNSYYIJVVAINIA.

' ingtobe a'full,;clear, and-exact description of the invention, -such'as will'enable others skilled in. theart to which '1; appertainstoimake and -usethe'sameg This invention 7 relates to valves, and} more particularly toauto'rnatic cut-oif valves for gas systems, andha's "for-its object to-provide a valvewhich' will beheld in an open position when the pressure'o'f-gas'is at a certain-point, but whichwill automatically clo'se when the. pressure falls below this -poirit,-l means being -;provided to prevent reopening] of the: valve 5 'whenthe pressure againincreases.

A further-object is to provide azvalve em! bodying thesefeatures. which may be ad usted to suit different conditionsand: whichwill be from a pointdistant from the valve. f' i 7 Other objects and advantages'will be apparent from the foll'owingdescription, andit'will be understood that modifications of the specific construction shown. may be made and any suitable materials may be used without departing 1 from the spiritof theinvention. I

reference indicatesimilar. parts in the several views, Figure 1 is aside elevation of the DIBS'. Fig.2 is a longitudinal section through the valve and the supply-passage. 1

cut invention.

Fig. 3 is a view showing the forward section of the casing removed. Fig. i 1s a view showingja portion of one side of the casing removed and illustrating the valve in side elevation. v

Referring nowto the draw ngs, the present and retainer invention comprises'acasing 5, including a forward minor section 6 and a rearward major portion 7 thetwo sectlons havlng mutuallyengaging flanges 8 at theirgmeeting ends in which attaching-bolts' 9 are-engaged.

Extending inwardly-from the rearward end wall 10 o'f'the section 7, adjacent to the upper edge thereof, there is a cylindrical pro ection 11, formed integral with the casing and hav- 2 ing a supply-passagei12, formed longitudinally therethrough, opening through its inner end and through the rearward end wall 10 of the casing. Formed integral with the casing and j 'AuTOMATI GAS U Q'F is a flange j 13, which surroundsthe passage 12, and this flangeis provided With interior j i threads for engagement by a section of'the piping of the gassystern. I

there is .a shaft '14 .upon whichmthere is secured avalve member 15, having an upwardly'-' extehdihghead *16' and-a downwardly-extend i. ing stem 17'. I The head. 1'6 carries, upon its Ii I rearward 'facea va-lve 18 Ma size to close the.

forward end of the passage 12, and t'h'efvalve member-is movable. to bring: thevalve into and out ofposition-ito thus close the passage. v

.Y'spcifie'atm m? I ettersl a tentiw, ;1 j"raten'toi Dec. 5, 1965.- llpplicationfiledJanuary; 431905.1 Serial NC 239, 10.

i extending ottwar lyfmmthe am there 1:

the'proj'ection bein'g' provided with abev'eled thefhead 16 and stem 17 areextending vertie cally {the valve ,18 lies in operative position,

and to hold the valve inembernormally in this position the stem 1.? isprovided with aweight 2O, which is slidably engaged therewith for longitudinal movement thereupon, and theweight isjprovided' with a set-screw. 21, by

.valvews eatg 19 at its free end; Thelarrangementof the-valve member is such that when which it may beheld at different points of its movement. It will be apparent that when the weight 20 is at the upward .limit of'its movek m'ent it will require a minimum of pressure against thevalve to rotate the, shaft 14 and crease asth'e weight 20 is moved downwardly.

Adjacent to oneof the side walls of thecasing the shaft 14 is provided with a concentrically=mounted disk 22, having the upper portion of its periphery provided with a pluralityIof: ratchet-teeth '23, the straight faces ,of which are directed toward theforwardxend of the casing: Rearwardly of the shaft 14 the wallzof the casing adjacent to which the disk 22'l ies is provided with an inwardly-extending cylindrical lug 24, which is engaged in .a perforation 25, formed in the rearward end of.a forwardly-extending retainer 26, this retainer." having a finger; 27 upon its lower thatthenecessai'y amount ofpressurewill in-' In the drawings forming a portion of this specification, and ingwhichilike numerals of.

IOO

edge. which lies normally in engagement with the ratchet-teeth23 'ot' the .disk to hold the disk and the shaft against forwardxmovement. The forwardend of the retainer is so pr0p0r-' tioned that the finger 27 is held by gravity in its normal position. The retainer has a rearwardly-extending portion 28, the interior portion of which is cut away, as shown at 29, to form a narrow rim 30, and lying within the inclosure of this rim adjacent to. the rearward end of the rearwardly-extendingv portion is the inner end of a shaft 31, which extends ily understood, .to permit of adjustmentof the l outwardly through the .side wall of the casing for a purpose to 'be presently described, and secured to the inner end of this shaft there is a cam-finger 32, which when the shaft is rotated in one directioncomes into engagement with the rim 30 to move the rearward. portion of the retainer downwardly, thus bri-n-ging the finger 27 out of engagement with the teeth 23 to permit .of free movement of the E shaft 14 and .the valve member. A-shield 33 I is disposed over the rearward portion of the retainer and the shaft .31 with its cam-finger 32. Formed through the forward endof :the 5 casing there is an .outletpassage 34, provided I with threads for the engagement of a gas-j pipe therein. The shaftBl outwardly of the 1 casing is provided with a crank 35, which is connected with .a shift-rod .36, mounted in a suitable bracket, and by means of .thisshiftrod the shaft :may be operated to imovezthel retainer, as will be readily understood. In .operation the weight '26) is so adjusted;

upon the stem 17 that the valve 18 will .open 3 when the desired pressure of ,gas is in the passage 12. The shaft 31 is then operated to i move the retainer out-of engagement with the teeth 23, which will permit the valve to .open under the pressure of the gas, and when the valve has opened suiiiciently the retainer is permitted to return to its normal positionand prevents further openingiof the valve,.as will be readily understood. Should the pressure? of gas fall, the weight 20 will causethe valve to-close, the weighted portion of theretainer 1 being sufficiently light to permit of its being raised by the weight, and the retainer willf prevent the valve from reopening should :the f pressure of .gas rise. The forward section 6 i of thecasing may be removed, as'-.w,-il=l :be readmechanism.

What is claimed is- 1. A mechanism of theclassdescribed comprising a casing having an inlet-port, .a pivotallysmounted closure for the inlet-port, a

weight 'adjustably connected with the closure and arranged to holdit'normally in closed position, said closure being adapted to beheld in inoperative position by pressure in the inlet-port, a ratchet-disk carried bythe closure, and a retainer movable into and out .of engagement "with the ratchetdisk, said retainer being arranged to hold the closure at times positively inoperative position, and means extendingioutwardly of the casing for moving the retainer into and out of operative position.

2. A mechanism of the classidescribedicomprising a casing having an inlet-port, aztransverse shaft in the casing, a-valve member :pivotally mounted upon the shaft,a-va-lvecarried by the valve memberand :ly'ing normally .in

position to close the inletport, adjustable means for holding the valve member yieldably with the valve in operative postion, and means for holding the valve member at times positively with the valve in operative position.

3. A mechanism of the class described comprising a casing having an opening therein, a closure for the opening, movable into and out of operative position, means for holding the closure yielda'bly in operative position, a ratchet-disk, said ratchet-disk being connected with the closure for rotation when the closure is .-moved,;and aretainer disposed for engagement with the ratchet-disk to hold the latter against rotatiomsaid retainer lying normally in engagement-with the ratchet-disk and being movable .outlof rits operative position.

4. A .mechanismiof theclassdescrlibed, comprising :acasing includzingttwo detachablyponnected sections, one of said sections havingan inlet-port, and :the other-section having an out- 1 let-port, a shaft journaled in the first-named section, -a -valve :mem-ber secured to the shaft, a va l-ve carried by the valve member and movable into and out of position to close the inlet-port when the shaft is xmovecha stem car- :ried by the valve member, a weight adjust- .abl-y engaged with the stem, .said weight being disposed :to hold the .shaft with the valve in operative position, a ratchet-disk carried by the shaft, .a retainer pivoted in said first named section of the (casing, and lying yieldably in engagement with the disk, said retainer being disposed to hold the disk with the valve against movementout of :its operative position, and means for moving the re- :tainer out of operative position.

. 5. An apparatus of the-classdescribedcomprising :a casing having an opening therein,a closure for the opening, said closure being movable into and out tof operative position, a

ratchet-disk connected with the closure for 9 rotation when theclosure is moved, and means cooperating with the ratchet-disk for holding the closure at times .against movement.

:6. In-anapparatus ofthe class described,-the combination -w itha pipe, of apivotally-mountedvalve member, a valvecarried by the member and movable therein into and out-of position to close the pipe, a stem carried by the member, a weight adjustably mounted upon the stem and arranged to hold the member yieldahly with the valve in operative position, and means movable into andou't of operative position for holding the valvemember at times against movement.

, In testimony whereof Iafiix my signature in presence of two witnesses.

RALPH H. REITER.

Witnesses:

WALTER THOMPSON, CHARLES SwAdER.

ICC 

